Endometriosis is one of the most common gynecological disorders. As to now, medical treatments of endometriosis are focused on the suppression of endogenous estrogen production with the application of gonadotropin-releasing hormone analogues, androgenic agents, oral contraceptives, progestins. 1,2 However, this may induce substantial side effects such as hot flashes, depression and osteoporosis, limiting the long-term application of this therapy. Alternatively, endometriotic lesions can also be surgically removed, but this is associated with high recurrence rates. This case is ovarian endometriosis. The size of the right ovarian chocolate cyst is 1.8cm, while the left one is 2.6cm. The patient has received traditional Chinese medicine treatments for endometriosis and was followed up regularly with ultrasound. Initially, the treatment is concentrated on invigorating blood circulation and dissolving blood stasis. The result was not satisfactory. Therefore, herbs of strengthening body resistance with combination of reinforcement and elimination nature are prescribed, and the size of cyst reduced and finally disappeared.